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The NS2 voltage stabiliser was made for the UK Navy. It was later (after 1941) re named the CV1199. This exhibit carries both designations.

The large anode is firmly attached to the pinch stem by a screw tighten collar.

The base of the closed anode cylinder has a ceramic disc inserted into it. The cathode lead passes through a glass tube up to the ceramic disc.

The closed end of the anode. The mica holds the top in place within the envelope.

The wide glass tube envelope is 46 mm in diameter, and excluding the B4 base pins is 145 mm tall.

Reference: Data-sheet. Type NS2 was first introduced in 1940. See also 1940 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.